EP0097111B1 - Mit Sicherungsring einstückiger Einsatz oder Bolzen - Google Patents

Mit Sicherungsring einstückiger Einsatz oder Bolzen Download PDF

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Publication number
EP0097111B1
EP0097111B1 EP83630098A EP83630098A EP0097111B1 EP 0097111 B1 EP0097111 B1 EP 0097111B1 EP 83630098 A EP83630098 A EP 83630098A EP 83630098 A EP83630098 A EP 83630098A EP 0097111 B1 EP0097111 B1 EP 0097111B1
Authority
EP
European Patent Office
Prior art keywords
lock ring
teeth
insert
stud
top surface
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP83630098A
Other languages
English (en)
French (fr)
Other versions
EP0097111A1 (de
Inventor
Jose Rosan, Jr.
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rexnord Inc
Original Assignee
Rexnord Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rexnord Inc filed Critical Rexnord Inc
Publication of EP0097111A1 publication Critical patent/EP0097111A1/de
Application granted granted Critical
Publication of EP0097111B1 publication Critical patent/EP0097111B1/de
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/02—Locking of screws, bolts or nuts in which the locking takes place after screwing down
    • F16B39/10—Locking of screws, bolts or nuts in which the locking takes place after screwing down by a plate, spring, wire or ring immovable with regard to the bolt or object and mainly perpendicular to the axis of the bolt

Definitions

  • the present invention relates to an integral ring-locked insert or stud of the type described in the precharacterizing portion of claim 1.
  • Inserts installed in a workpiece provide a means for attachment of an object to the workpiece. Inserts are used when the stress requirements are greater than provided by the workpiece. An insert can distribute the stress over a much greater area and can be harder material than would be provided by the workpiece alone.
  • An example of an insert is a plug-like object having external threads to bite into or cooperate with the workpiece material. The insert also has internal threads for receiving the male threads of a cooperating piece.
  • Studs in contrast provide an anchor for attachment of objects to a workpiece.
  • a stud secures to a workpiece with male threads but itself provides male threads for cooperating with a female threaded nut or other fastening means.
  • the threads of the insert and stud can be of hardened material, much harder than the workpiece. It is not uncommon to also provide against the backing out of the threads due to vibration.
  • the action used may often entail keeping track of separate lock rings which bite into the workpiece and by coacting with the insert of stud and the workpiece they prevent rotational movement.
  • a ring-locked insert according to the precharacterizing portion of claim 1, is described having a body portion and a lock ring portion integrally connected together by a radially extending interconnection.
  • Fig. 4 of US-A-3 179 144 a ring-locked insert is shown with the outer teeth of the serrated portion terminating short of the interconnection and the inner radial grooves of the lock ring terminating short of the body portion top surface.
  • the axial length of meshing engagement between the outer teeth and the inner radial grooves, with the lock ring in its locking position is limited to a relatively short axial portion of the teeth and groove. This may affect the safe retention of the body of the insert by the lock ring.
  • the object of the invention is to provide an integral ring-locked insert or stud which provides improved retention of the insert or stud by the lock ring.
  • the ring-locked insert or stud according to the invention is characterized by said cylindrical surface and the teeth of the serrated portion extending to the interconnecting means, the cylindrical inner surface and the radial grooves of the lock ring extending to the body top surface, and the interconnecting means being oriented normal with respect to the body top surface.
  • the teeth of the serrated portion are now engagable by the radial grooves of the lock ring over the full axial length thereof, thus provided improved retention of the insert or stud by the lock ring.
  • the ring is connected to the insert or stud by metal tabs or a metal strip, of the same material as the stud or insert, that is broken upon installation of the lock ring into the workpiece.
  • a special tool is used for installation of the lock ring.
  • the lock ring after being broken from the stud or insert, rotationally couples to the balance of the fastener through meshing of the internal teeth of the lock ring and the external teeth of the fastener. The rough edges of the metal tabs or strip are shattered during installation.
  • the mode illustrated contemplates an insert or stud externally threaded for threaded receipt in the workpiece.
  • the insert has a lock ring on one end which faces outward from the workpiece. This is formed when the insert is manufactured. The external threads of the insert are formed afterwards.
  • the lock ring is connected to the insert by small metal tabs or a metal strip of the same material as the insert is made of, which is broken during installation of the lock ring.
  • the studs are manufactured similarly.
  • the lock ring is first formed as attached to the center of the stud with metal tabs or a metal strip. Both the tabs and strip are formed of the same parent material as the stud. Different threads are then formed on the top and bottom shanks of the stud.
  • an insert body 10 of the present invention has a connected lock ring 11.
  • the insert has external threads 12 running down its length.
  • Metal tabs or bars 13 or a metal ring (not shown) of the same patent material as the insert hold the lock ring 11 to the insert 10 prior to installation.
  • a bore 14 in the workpiece is internally threaded 16 to receive the insert.
  • the insert 10 is also internally threaded 15 with a pilot or champher 19 that guides a male threaded fastener (not shown) into the insert.
  • the lock ring 11 has external teeth or serrations 17 that bite or swage their way into the workpiece upon installation.
  • Internal grooves 18 of the lock ring cooperatively engage with the external teeth 20 of the insert, after the metal tabs 13 or the metal strip is broken and the lock ring 11 installed in the workpiece. This is illustrated in Figure 2.
  • the internal grooves may be the shape shown or any geometric shape or design may dictate.
  • the metal tabs 13 are composed of thin parent metal left behind during the formation of the insert and lock ring.
  • the major diameter of the insert 10 does not exceed the inside diameter of lock ring 11 so that no difficulty is experienced installing the lock ring 11 upon the insert 10.
  • the external teeth 17 on the ring 11 are angled to facilitate entrance into the workpiece. Interior grooves 18 are in this mode 90° typically and accommodate the external teeth 20 of the insert.
  • Figure 3 illustrates a stud 40 with the lock ring 41 held in place by metal tabs or bars 42, or a metal ring (not shown), of the same parent material as the metal stud.
  • the upper and lower portion 49 and 43 respectively is covered with threads which may be of a different size.
  • the lock ring 41 is then displaced using a special tool (not shown).
  • the lock ring 41 coacts with the external teeth 45 on the center section 46 of the stud by accommodating the teeth 45 in the internal grooves 47. These grooves may be of any geometric design besides the mode illustrated.
  • the lock ring 41 is anchored by the workpiece material 44 which it swages or bites into with its external teeth 48 when forced into the workpiece during installation.
  • the lock ring 41 thus prevents rotation of the stud 40, after being installed in the workpiece.
  • the upper thread 49 of the stud which may be a different size from the lower threaded 43 is rolled on after the lock ring 41 is formed.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
  • Clamps And Clips (AREA)
  • Dowels (AREA)

Claims (2)

1. Einsatz oder Bolzen, der durch einen angeformten Ring sicherbar ist, mit:
einem Körper (10; 40), der ein Ende hat, das eine obere Fläche des Körpers bildet, sowie eine mit Schraubgewinde versehene Außenfläche (12; 43) zum Einschrauben in ein Gewindeloch in einem Werkstück (21, 44), sowie einen weiteren Gewindeteil (15; 49) zum Aufnehmen einer Befestigungseinrichtung;
einem gezahnten Teil an dem einen Ende des Körpers (10; 40), wobei der gezahnte Teil eine gerade zylindrische Außenoberfläche und mehrere gegenseitgen Winkelabstand aufweisende und sich axial erstreckende Zähne (20; 45), die von der Außenoberfläche radial nach außen vorstehen, aufweist;
einem Sicherungsring (11; 41), der ein freies Ende hat und axial entfernt davon mit dem Körper (10; 40) an dem einen Ende desselben einstückig verbunden ist, wobei der Sicherungsring (11; 41) eine äußere zylindrische Oberfläche und mehrere radiale Zähne (17; 48) hat, welche von der äußeren zylindrischen Sicherungsoberfläche vorstehen;
wobei der Sicherungsring (11; 41) eine gerade zylindrische Innenoberfläche und mehrere radiale Nuten (18; 47) hat, die sich axial in axialer Ausrichtung mit den Zähnen (20; 45) an dem gezahnten Teil der Körpers erstrecken; und
eine Verbindungseinrichtung (13; 42) zwischen dem Sicherungsring (11; 41) und dem Körper (10; 40), wobei die einstückige Verbindung zwischen dem Sicherungsring (11; 41) und dem Körper (10; 40) and der Verbindungsrichtung (13; 42) zerbrechbar ist,
dadurch gekennzeichnet, daß sich die zylindrische Oberfläche und die Zähne (20; 45) des gezahnten Teils zu der Verbindungseinrichtung (13; 42) erstrecken, daß sich die zylindrische Innenoberfläche und die radialen Nuten (18; 47) des Sicherungsringes (11; 41) zu der oberen Fläche des Körpers erstrecken und daß die Verbindungseinrichtung (13; 42) normal zu der oberen Fläche des Körpers ausgerichtet ist.
2. Einsatz oder Bolzen nach Anspruch 1, dadurch gekennzeichnet, daß die Sicherungsringzähne (17; 48) Enden haben, mittels welchen sie in eine obere Fläche eines Werkstückes einfassen können, wobei die Sicherungsringzähne (17; 48) oberhalb der oberen Fläche des Körpers endigen und einen ungezahnten Teil der äußeren zylindrischen Oberfläche zwischen den Enden der Verriegelungsringszähne und der oberen Fläche des Körpers lassen, wobei die Verbindungseinrichtung (13; 42) den ungezahnten Teil aufweist.
EP83630098A 1982-06-11 1983-06-02 Mit Sicherungsring einstückiger Einsatz oder Bolzen Expired EP0097111B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US38770282A 1982-06-11 1982-06-11
US387702 1982-06-11

Publications (2)

Publication Number Publication Date
EP0097111A1 EP0097111A1 (de) 1983-12-28
EP0097111B1 true EP0097111B1 (de) 1987-06-03

Family

ID=23531035

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83630098A Expired EP0097111B1 (de) 1982-06-11 1983-06-02 Mit Sicherungsring einstückiger Einsatz oder Bolzen

Country Status (10)

Country Link
EP (1) EP0097111B1 (de)
JP (1) JPS596414A (de)
AR (1) AR230673A1 (de)
AU (1) AU558440B2 (de)
BR (1) BR8303097A (de)
CA (1) CA1220370A (de)
DE (1) DE3371933D1 (de)
DK (1) DK265283A (de)
IL (1) IL68836A0 (de)
ZA (1) ZA834083B (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6382893B1 (en) * 2000-06-12 2002-05-07 Gary J. Reed Thread replacement system and device
CA2377709C (en) * 2002-03-20 2008-12-09 Ontario Power Generation Stud locking mechanism for fuel channel positioning assembly
EP2604872B1 (de) * 2011-12-12 2015-02-25 AGUSTAWESTLAND S.p.A. Sicherungsring und Gewindebolzen
WO2017020285A1 (zh) * 2015-08-06 2017-02-09 杨东佐 一种紧固连接组件及结构、安装及拆卸方法、曲轴连杆机构、轨道结构、骨连接装置及骨连接方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3179144A (en) * 1962-10-01 1965-04-20 Clarence K Brown Combined threaded insert and locking ring
SE325752B (de) * 1964-09-16 1970-07-06 Rosan Eng Corp
GB1158907A (en) * 1965-11-30 1969-07-23 Avdel Ltd Blind Hole Anchor Nut Fastener Device
GB1164371A (en) * 1966-03-31 1969-09-17 Vsi Corp Improvements in Blind Fasteners.
DE2062968A1 (de) * 1970-01-24 1971-08-05 Precision Screw & Mfg Einsatzstuck sowie Verfahren zur Her stellung eines Einsatzstuckes

Also Published As

Publication number Publication date
JPS596414A (ja) 1984-01-13
DK265283A (da) 1983-12-12
AR230673A1 (es) 1984-05-31
JPS6342127B2 (de) 1988-08-22
AU558440B2 (en) 1987-01-29
IL68836A0 (en) 1983-09-30
DK265283D0 (da) 1983-06-10
BR8303097A (pt) 1984-01-31
DE3371933D1 (en) 1987-07-09
AU1528083A (en) 1983-12-15
ZA834083B (en) 1984-02-29
CA1220370A (en) 1987-04-14
EP0097111A1 (de) 1983-12-28

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